Description

General

· The multi X2500 is more than “just” an AOX analyzer. It is suitable for the determination of AOX, EOX and POX, as well as for the determination of TOC in aqueous samples and for total chlorine (TX) determination in solid samples.

· An innovative concept – Double Furnace Technology combines horizontal and vertical combustion in a single instrument! The advantages of both variants are combined at the highest level

· Unique wide-range coulometer – for precise measurements in the range of ng to mg

· Integrated gas box

· SelfCheck System (SCS)

· Intuitive software navigation

· Minimal amont of maintenance

Optimal adjustment for each sample matrix – efficient combustion

The innovative Double Furnace Technology combines vertical and horizontal combustion in a single instrument. This allows optimal adjustment of the combustion process to the requirements of diverse samples or parameters.

Digestion temperature

Up to 1100°C in vertical or horizontal operating modes.

Required gases

Oxygen 99.995% for AOX and TOC determination in vertical mode, additionally argon 99.996 % for EOX, POX or TX/TOX determination in solids as well as for all horizontal applications

· Unique wide-range coulometer detects chlorine contents of very few ng (an advantage with EOX determination) up to one milligram (an advantage with total chlorine determination in solids)

· Extremely large dynamic measurement range, no “tipping” of the electrolytes with unexpected high Cl contents in the sample

· Integrated cell cooling – for outstanding sensitivity and long-term stability with large sample series

Measurement Time

AOX/EOX/TX:

Approx. 8 minutes depending on the concentration and application

TOC:

Approx. 3 minutes depending on the concentration and application

Sample Feed

The multi X2500 can be operated manually for all applications or it can be equipped with the automatic sample feeder.

AOX Sample Feeding – variable:

· Combustion in container for precise determination of the smallest AOX contents in samples using column or batch methods; the sample is optimally protected from environmental influences; this technology ensures a long lifespan of the combustion chamber due to the protecting function of the used quartz container.

· Direct feeding of the activated charcoal for very high sample throughput of AOX samples using the column method in vertical operation.

· Horizontal: Using a manual or automatic boat feeder, whereby the samples can be placed on a quartz boat (using the column or batch method).

AOX sample feeder for vertical operation

autoX 36, autoX 36d, autoX 112

· autoX 36: For small sample series with 36 positions – allows automatic feeding of AOX samples in containers using the column and batch method in a single sample cycle, no additional flushing with inert gas necessary

· autoX 36d: For the direct dosing of activated charcoal from a maximum of 36 columns for AOX determination using the column method or feeding of AOX samples in containers with an additional sample tray

· autoX 112: For large sample series using the direct dosing of activated charcoal from a maximum of 112 columns for AOX determination using the column method – maximum sample throughput guaranteed

AOX sample feeder for horizontal operation

autoX 112

· autoX 112: Guarantees in combination with an automatic boat feeder automated feeding of up to 35 boats, which can optionally be used with AOX samples using the column method (container) or the batch method (polycarbonate membrane filter)

EOX Sample Feeding – variable:

· Vertical: Via direct injection into the combustion chamber using a microliter syringe, manual or automated

· Horizontal: Using a boat feeder, whereby the EOX extract is next dosed onto a quartz boat. Dosing on the boat can be manual or automatic

· Manually: Using an auto-injector for secure dosing of EOX samples with constant, selectable injection speed in vertical or horizontal operation

· Automatically: With sample feeder autoX 112 for a maximum of 112 EOX samples in vertical or horizontal operation

Sample Feed

TX sample feeding – horizontal

· Manually: With a manual or automatic boat feeder

· The combination of the automatic boat feeder with the flame sensor technology allows for a complete, matrix- and time-optimized combustion of the most difficult solid samples

· Automatically: With the sample feeder autoX 112, assures in combination with the

automated boat feeder the automatic feeding of up to 35 solid material samples for TX determination

TOC sample feeding – vertical

· Manually: Via direct injection into the combustion chamber with a microliter syringe

· Automatically: Via direct injection into the combustion chamber with the sample feeder autoX 112 for the direct determination of TOC in a maximum of 60 water samples

POX sample feeding – vertical

· Manually: Via direct feeding of the gaseous sample into the combustion chamber with the assistance of carrier gas

Sample Preparation – Towards a Higher Throughput

Flexible sample preparation systems are available to the user for individual analysis needs in regard to the number of samples to be examined. All enrichment systems are characterized by their minimum maintenance needs.

Batch methods

· AFU 3: Automatic filter unit for the simultaneous semi-automatic processing of three samples using the column or batch method. The system represents an alternative to the classic membrane filtration used for the batch method – however, there is no need for expensive polycarbonate membrane filters anymore. The filtration is performed directly in a frits container.

Sample Preparation – Towards a Higher Throughput

Column Method

· APU sim: The sample preparation unit APU sim is a robust adsorption system for the sample preparation for AOX determination using the column method in accordance with ISO 9562. Up to six samples can be simultaneously processed in three separate adsorption channels. Sample volume, washing volume and adsorption speed are individually adjustable. Intuitive user menus and a clearly arranged display guarantee easiest operation. Also samples with particle load can be adsorbed to columns of diverse dimensions.

· APU 28: Fully automatic sample preparation unit for AOX determination using the column method in agreement with ISO 9562 for the enrichment of up to 28 particle containing samples. The robust system operates without complex valve technology and is characterized by minimal maintenance effort. It allows individually preprogrammed sample and washing volumes and also automatic sample processing even in overnight operation.

· APU 28 SPE: allows fully automatic enrichment according to SPE – methods without any manual intervention and is suitable also for common AOX sample preparation

· AFU 3: Automatic filter unit for the semi-automatic simultaneous processing of three samples using the column or batch method.

Self Check System (SCS)

Easy to use: The multi X2500 is equipped standard with a Self Check System so that maximum operating safety can be ensured with minimum operating effort.

The self-explanatory multiWin software accompanies the user beginning with the system

start to turning off the analysis system at the end of a workday, with guidance through all the relevant menu points. multiWin monitors and regulates all important system parameters.

The software immediately communicates any system configuration errors and the entry of suitable parameters so that unusable results can be prevented in advance. multiWin

Checks the system performance and the analytic quality and delivers a clear presentation of the measurement results in individual analysis reports, and much more besides.

Available as a PC version.

The self-explanatory multiWin software accompanies the user beginning with the system

start to turning off the analysis system at the end of a workday, with guidance through all the nrelevant menu points. multiWin monitors and regulates all important system parameters.

The software immediately communicates any system configuration errors and the entry of suitable parameters so that unusable results can be prevented in advance. multiWin checks the system performance and the analytic quality and delivers a clear presentation of the measurement results in individual analysis reports, and much more besides.

Available as a PC version.

Maintenance and Care

The maintenance and operating efforts are reduced to a minimum with the multi X

2500 andthe sample preparation systems.

Features:

· Fast operational readiness

· Unparalleled easy access to all relevant components

· Easy exchange of components thanks to a modular design

· Simple exchange of the sulphuric acid

· Long lifespan of the electrolytes

· Robust construction due to the use of resistant materials with a long service life

· Self Check System for the monitoring of relevant instrument parameters, prevention of incorrect operation and for automatic safety shut-off

· Intuitive software navigation – monitoring of maintenance intervals

Conformity to Standards

The multi X2500 meets the requirements of many relevant standards for AOX, EOX and